Our Nearest Neighbor Our moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate, and creating a tidal rhythm that has guided humans for thousands of years. The moon was likely formed after a Mars-sized body collided with Earth and the debris formed into the most prominent feature in our night sky.

Watch Out for the Super Harvest Moon
For the first time in almost 20 years, northern autumn is beginning on the night of a full Moon. The coincidence sets the stage for a "Super Harvest Moon" and a must-see sky show to mark the change of seasons.

Discovery of the Moon's Mysterious Mascons
While movie audiences watched scientists uncover a mystery on the Moon in 2001: A Space Odyssey, a strangely parallel story was unfolding in real life. And the first human missions to the Moon were at stake.

Lunar GRAIL
GRAIL is a future NASA mission that will probe the moon's gravity field.

Watch Out for the Super Harvest Moon
For the first time in almost 20 years, northern autumn is beginning on the night of a full Moon. The coincidence sets the stage for a "Super Harvest Moon" and a must-see sky show to mark the change of seasons.

Discovery of the Moon's Mysterious Mascons
While movie audiences watched scientists uncover a mystery on the Moon in 2001: A Space Odyssey, a strangely parallel story was unfolding in real life. And the first human missions to the Moon were at stake.

Lunar GRAIL
GRAIL is a future NASA mission that will probe the moon's gravity field.